Zhentiw - 博客园

2022年9月26日

摘要： ShareReplay is using ReplaySubject. It will reply the messages to later subscribers. It turns unicast observable to multicase observable. shareReplay( 阅读全文

posted @ 2022-09-26 13:29 Zhentiw 阅读(193) 评论(0) 推荐(0)

[Rxjs] Build a basic application store with Subjects

摘要： Store.js import { BehaviorSubject, Subject } from 'rxjs'; import { map, distinctUntilKeyChanged, scan } from 'rxjs/operators'; export class Observable 阅读全文

posted @ 2022-09-26 13:19 Zhentiw 阅读(42) 评论(0) 推荐(0)

[Typescript] 37. Medium - KebabCase *

摘要： Replace the camelCase or PascalCase string with kebab-case. FooBarBaz -> foo-bar-baz For example type FooBarBaz = KebabCase<"FooBarBaz">; const foobar 阅读全文

posted @ 2022-09-26 03:02 Zhentiw 阅读(42) 评论(0) 推荐(0)

2022年9月25日

[Typescript] 36. Medium - Merge

摘要： Merge two types into a new type. Keys of the second type overrides keys of the first type. For example type foo = { name: string; age: string; } type 阅读全文

posted @ 2022-09-25 03:12 Zhentiw 阅读(49) 评论(0) 推荐(0)

2022年9月16日

[Typescript] 34. Medium - String to Union

摘要： Implement the String to Union type. Type take string argument. The output should be a union of input letters For example type Test = '123'; type Resul 阅读全文

posted @ 2022-09-16 16:25 Zhentiw 阅读(31) 评论(0) 推荐(0)

[Typescript] 35. Medium - Absolute

摘要： Implement the Absolute type. A type that take string, number or bigint. The output should be a positive number string For example type Test = -100; ty 阅读全文

posted @ 2022-09-16 16:18 Zhentiw 阅读(22) 评论(0) 推荐(0)

2022年9月15日

[RxJS] Share data among multiple subscribers with Subjects

摘要： Subject as resource can be shared amount multi observers. Normal Observable pattern is Cold observable, each subscription will get its own resource: i 阅读全文

posted @ 2022-09-15 21:06 Zhentiw 阅读(50) 评论(0) 推荐(0)

[Typescript] 33. Medium - Flatten

摘要： In this challenge, you would need to write a type that takes an array and emitted the flatten array type. For example: type flatten = Flatten<[1, 2, [ 阅读全文

posted @ 2022-09-15 14:32 Zhentiw 阅读(30) 评论(0) 推荐(0)

[Typescript] 32. Medium - Permutation

摘要： Implement permutation type that transforms union types into the array that includes permutations of unions. type perm = Permutation<'A' | 'B' | 'C'>; 阅读全文

posted @ 2022-09-15 01:36 Zhentiw 阅读(51) 评论(0) 推荐(0)

[Algorithm] Permutations

摘要： Write a function that takes in an array of unique integers and returns an array of all permutations of those integers in no particular order. If the i 阅读全文

posted @ 2022-09-15 01:11 Zhentiw 阅读(38) 评论(0) 推荐(0)

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